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Finding the Fourth Proportional to 661,691.40, 992,537.10 and 603,630.60

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Solution

The fourth proportional to 661,691.40, 992,537.10 and 603,630.60 is: 905,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,691.40 : 992,537.10 = 603,630.60 : x
  2. Step 2: Convert to fraction form
    661,691.40/992,537.10 = 603,630.60/x
  3. Step 3: Cross multiply
    661,691.40x = 992,537.10 × 603,630.60
  4. Step 4: Simplify right side
    661,691.40x = 599,125,765,195.26
  5. Step 5: Solve for x
    x = 599,125,765,195.26/661,691.40
  6. Step 6: Final answer
    x = 905,445.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.